Weather Data - October 2009

October 2009
Times indicate the end of a measurement period (BST)
Maximum Temperature 23.5 ēC 28-Oct-09   10:15 AM
Minimum Temperature 2.2 ēC 18-Oct-09    5:15 AM
Mean (15 min) 12.6 ēC 1.8 from average
Mean (Max Min) 13.3 ēC 2.5 from average  (calculated from 0901 to 0900 GMT data)
Mean Max 18.2 ēC 4.7 from average  (calculated from 0901 to 0900 GMT data)
Mean Min 8.5 ēC 1.0 from average  (calculated from 0901 to 0900 GMT data)
Lowest Max 12.7 ēC 07-Oct-09
Highest Min 13.1 ēC 01-Nov-09
Air Frosts 0 0 hours of Frost duration
Maximum Station Pressure 1034 hPa 15-Oct-09   10:15 AM
Minimum Station Pressure 990 hPa 20-Oct-09    9:45 AM
Mean 1015.5 hPa
Mean of 09Z values 1015.4 hPa
Rainfall 87.3 mm 64.7% of average
Wettest 24hr 32.7 mm 01-Nov-09 8:30 AM
Wettest Calendar Day 32.7 mm 01-Nov-09 (calculated from 0901 to 0900 following day)
Rain Days ( > 0.3mm) 13 days (calculated from 0901 to 0900 GMT data)
Wet Days (>1.0mm) 8 days (calculated from 0901 to 0900 GMT data)
Wet Days (>5.0mm) 6 days (calculated from 0901 to 0900 GMT data)
Max 15min accum 3.9 mm 31-Oct-09    3:00 AM
Rain Duration 32 hours
Longest Dry period 10.38 days 20-Oct-09 5:00 AM 249.00 (hours)
Longest Wet period (>0.3mm / 15 mins) 5.50 hours 01-Nov-09 8:30 AM
Sunshine Hours (>30klux) 61.75 hours 63.7% of average
Max Sunshine 5.25 hours 08-Oct-09 (calculated from 0901 to 0900 following day)
Sunshine Hours (>50%) 93 hours 95.9% of average
Max Sunshine 6.75 hours 14-Oct-09 (calculated from 0901 to 0900 following day)
Brightest Calendar Day 13.0 klux 07-Oct-09 (calculated from 0901 to 0900 following day)
Sunless Days 8 days (calculated from 0901 to 0900 GMT data)
Maximum Brightness (klux) 79.1 klux 02-Oct-09    1:45 PM
Average Wind Speed #DIV/0! knots #DIV/0! mph
Maximum Wind Speed 0 knots #N/A #N/A 0.0 mph
Days with wind from: (calculated from 0901 to 0900 GMT data)
Calm 31
N 0
NE 0
E 0
SE 0
S 0
SW 0
W 0
NW 0
Average RH (at 09Z) 84.1

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